Moessbauer and magnetic measurements of superconducting LiFeP

TL;DR

This study investigates the superconducting properties and Moessbauer spectra of LiFeP, revealing a transition temperature of 5.5 K, a second critical field above 1 kOe, and no magnetic order down to 4.2 K.

Contribution

First detailed Moessbauer and magnetic measurements of LiFeP, providing insights into its superconducting and magnetic properties.

Findings

Superconducting transition at about 5.5 K.

Second critical field exceeds 1 kOe.

No magnetic order observed down to 4.2 K.

Abstract

The LiFeP sample has been prepared by means of high-temperature solid state reaction. A transition temperature to the superconducting state was found as about 5.5 K by measurements of magnetization versus temperature. The second critical field was found above 1 kOe. Moessbauer spectra of the LiFeP phase are characterized by the quadrupole split doublet having splitting of about 0.10 mm/s at room temperature and 0.12 mm/s at 4.2 K. No magnetic order occurs down to 4.2 K.